Step 1: Understanding the definition.
Francis Galton, a cousin of Charles Darwin, coined the term "Eugenics" in 1883. It refers to the belief and practice of improving the genetic quality of the human population by selective breeding.
Step 2: Applying to the sentence.
The sentence discusses selecting for desirable traits and eliminating undesirable ones, which exactly matches the definition of eugenics.
In the following figure, four overlapping shapes (rectangle, triangle, circle, and hexagon) are given. The sum of the numbers which belong to only two overlapping shapes is ________